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Security report for sensiolabs.com

SensioLabs · Technology · France

Medium risk. 5 critical or high findings in Security headers and SSL/TLS.

Security score

55/100

Risk levelMedium

0–100, higher is better. How it is calculated

SensioLabs is a well-established technology company founded in 2006, recognized as the creator of the Symfony PHP framework. The company specializes in providing expert consulting, training, and software products focused on Symfony and PHP development. Positioned as a leader in the Symfony ecosystem, SensioLabs serves developers and enterprises seeking to accelerate their web and e-commerce projects with Symfony expertise. The website reflects a mature digital presence with professional design, clear navigation, and comprehensive content about their services and products. Technically, the site employs modern JavaScript frameworks and analytics tools, hosted by a reputable registrar, ensuring good performance and mobile optimization. Security posture is solid with HTTPS enforced and domain transfer protections, though some security headers and explicit policies could be improved. Overall, SensioLabs demonstrates high business credibility and trustworthiness with visible client logos and a strong community footprint.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

5 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • High

      Missing X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…
  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

Need hands-on remediation? Email guard@offseq.com

Keep watching sensiolabs.com

This scan found 25 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

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Recommended

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
52
Security headers
15
Email security
70
DNS health
70
Network security
40
GDPR outside view
83
Average
55

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention sensiolabs.com, from OffSeq Breach.

Total records
573
Employees
0
Customers
570
Third parties
3
Weak passwords
15%

4 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for sensiolabs.com.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

SensioLabs operates in the technology sector, focusing on software development frameworks and consulting services. Their business model includes training, expert missions, audits, and software tools like SymfonyInsight and SymfonyCloud. The company targets developers, enterprises, and organizations requiring Symfony expertise, positioning itself as a premium provider with a large certified expert team. Partnerships with major clients such as BNP Paribas and BBC indicate strong market acceptance. The company maintains a consistent brand and messaging strategy, emphasizing its role as Symfony's creator. Growth indicators include active community engagement and a broad service portfolio. The absence of privacy protection in WHOIS and domain age supports legitimacy and transparency.

Security posture

The website enforces HTTPS and uses a reputable registrar with clientTransferProhibited status, indicating good domain security. However, explicit security headers like Content-Security-Policy and X-Content-Type-Options are not evident in the HTML source, suggesting room for improvement. No security or incident response policies are published, and no vulnerability disclosure or security.txt files are found. The site does not expose sensitive data or vulnerable libraries visibly. Analytics usage is moderate with Matomo, respecting privacy better than many alternatives. Overall, the security posture is good but could be enhanced by publishing formal security policies and improving HTTP headers.

Recommendations

  1. Implement and enforce a comprehensive Content-Security-Policy header to mitigate XSS risks.
  2. Add explicit X-Content-Type-Options and X-Frame-Options headers to improve browser security.
  3. Publish a dedicated security policy and vulnerability disclosure page to enhance transparency and incident response readiness.
  4. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  5. Regularly audit and update third-party libraries and scripts to avoid potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SensioLabs
Description
SensioLabs is the creator of the Open-Source framework Symfony. The company advises, trains, and shares expertise on development, e-commerce, and business applications.
Key services
Feasibility Study, Agile Bootstrap Workshop, Project Sizing and Planning, Architecture Workshop, Proof of Concept, API Architecture Workshop, Cloud Infrastructure Workshop, Migration Workshop, Symfony Coaching, Progressive Migration
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript ES Modules, Stimulus JS, Symfony PHP Framework, Matomo Analytics
Frameworks
Symfony
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • No exposed sensitive data in HTML
  • Use of security audits as a service

Analytics and tracking

Services
Matomo
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo
Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is professional and content-rich with clear business focus on Symfony and PHP consulting and training.
  2. Strong branding and consistent messaging about Symfony expertise.
  3. Multiple client logos and references to partnerships enhance trust.
  4. No signs of malicious or suspicious content.
  5. No explicit security policy or incident response page found.
  6. Good use of modern web technologies and analytics with privacy considerations.
Technical notes

Notes

The website uses modern web technologies including ES modules, Stimulus JS, and Symfony PHP framework. It is hosted with Gandi SAS, a reputable provider, and employs Matomo for analytics, indicating a privacy-conscious approach. The site is well-optimized for mobile devices and shows good performance characteristics. The HTML structure is valid and SEO-friendly with appropriate meta tags and Open Graph data. There is no detected CMS, suggesting a custom or framework-based implementation. The technical infrastructure supports a professional and scalable web presence with minimal technical debt visible from the front-end analysis.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 52/100Medium32 findingsView report
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